From the 2018 Code4LibT-Shirt Committee:
It's Time! Starting Wednesday November 1st, 2017, we are issuing a
month-long open call for a logo design that will be featured on the front
of the Code4Lib 2018 Conference t-shirt. The winning logo will be based on
a popular vote, which will commence after the submission process closes.
*DESIGNS ARE DUE BY FRIDAY, DECEMBER 1, 2017 at 11:59 PM Eastern Standard
Link for more details and submissions: https://wiki.code4lib.org/